The tubing has a rough, pitted surface finish after sanding off pickle coat. It is not rust, more like dry galling when it was pulled through the die or just bad materials? Welds nice. There is no mill or manufacture markings- only script TM-AMS 6336 OM AMS-T- 6736B. MIL-T-6736 4130 SMLS COND N 0.62...

DGA pilot gets it spot on. Save but the full volkswagon power plant. The consensus is to put a .625" x . 065 wall CroMo square tube for load bearing member in tension. That will make a better weld at that junction. FEA shows almost 3 times strength needed for loads at max flight loads. Thanks t...

Just wanted to see how others would take on the task...nothing more. This is my fourth aircraft from plans...not new to building solid planes. I have 4 engineers opinions and the local EAA chapter with me. I don't negatively impact others...hmmm. This place used to full of helpful ideas... Guess thi...

No issues with anyone , no one being an arsehat... I do fly what I weld. I have no issues with that or making a sound weld. If you only knew what level of work that was signed off and flies over many heads at night.... Let's just say I have trust in my work. I was simply looking for some tips on &qu...

This is a strut attachment point on a 5/8 by .035 fuselage tube. The ones that were built back in the early 80s were mig welded and I'm not doing that if possible. Just wanted to know if there is any advice to get this welded up from the inside of those cross tubes with a TIG torch and do it in a sa...

:D I know my safety wire is composed of 18% chromium / 8% nickel {302 or 304} . I do like to weld thin materials with it. Question is how would it hold up on a header flange and tube in unknown grades of SS? Or would 309l be the natural safe go to? Going to make "step headers" - 1.375 to 1...

3/32" red tipped thoriated..... usually have .12 uSev background

I have not had good results from the E3. I have had only good things to say about 2% Lanth. as I use that across the board for most everything.....my .02 with my Dynasty 210DX

I thought this was too nice not to post. At least I appreciated the skill here. A simple AC dryer made in the early 90's. Like to see the positioner they had. Every weld on this thing is like this. I was impressed as it cant be more than .050" after checking with thickness gauge .

It is a rag and tube bird. Avid flyer- similar- kitfox. Tons of mods and upgrades to make it not just new.

As for the copper... I have a good friend that pulled some 480v change gear out of a building in town. This was the main power interrupt. He was able to keep all of the pieces. I have 1/2 and 5/8 thick plates bigger than your hand. Also have some 1.25 x 2 aluminum that machines really nice... hardne...

Welded a grade 5 plain- uncoated 1/4-28 bolt to this today. I cut a radius with a fly cutter so the head would lie flat on the curve of the .060" bracket. Tricky to stay small with a puddle and keep things going good.... still had a bit of push through on the back side after trying to keep amps...

OK Here goes as a report of what worked for me and the material I had- .030" 6061 T-6 sheet. Machine Dynasty 210 1/16" 4043 filler is the smallest I have 18CFH 100% argon running a 17 watercooled CK torch w/gas lens-pulse set to 60 pps,33% peak, Backgnd 33%. Amps set to 70 w 70% balance @ ...

I would love to do something like that...issue is that where the pulley bracket needs to go the main spar is where this plate gets riveted onto. No other holes allowed at that area. No back side access of anything.

Yes you are right... more airplane stuff. The pulley deflects a cable run of 25 or so degrees. Even calculating the load as a tangent force it would be less than 65 to 85 lds force at the rare moments it would see that kind of stress. Surely a factor of 4 for safety it would be secure.... plus it is...

The reason I wanted to use stainless is for Corrosion Protection and the pulley does have a sealed bearing. I'm just afraid of a Nas bolt being welded it has become very very brittle in the haz and I would expect it to break. Maybe I would be better off using a grade 5 quarter 28 shoulder Bolt and w...

The question is I have a .062 4130 plate with a 8740 bolt that had been mig welded to it for a pulley to operate off of. I feel like this is going to be really brittle and a very weak weldment to say the least about it so I opted to investigate implementing a stainless steel bolt of 316 or 304 alloy...

I thought I had made a mistake with so much $ on one machine. I love mine- and can say it has helped me to be a better welder. As for the AC side of it is awesome.... its almost like it wants to weld. A lot left for me to explore yet on it though.

My mentor that has helped along my welding adventures said I would probably be well off to heat these casting to around 200 deg. F before lighting up on it. There is a plug that has to be welded into the opening...moved the intake port. You think the Dynasty 210 w/argon will deliver or do I need to ...

My machine doesn't run the fan on initial start up , but does stay in a low mode of "on" time like yours after welding. Kind of bugged me too. Interested to see if it is a bug issue with software or not...have not had much time to weld with it though...only a couple hours. Spent a lot of t...

Did use a pedal....did not cut plate down. I am trying to control the puddle and arc as much as I can...trying to figure out how to keep it very confined. I think I need to ditch this tungsten and get some 2% lanth. This seems to splinter and arc out the sides after a while at 60 amps or so even wit...

Machine set at 75 amps and 124 Hertz 74% electrode negative I'm using 1/16th 1.5% lanthanated tungsten. 15 - 18 CFH on straight argon. What can I do from here outside of the settings to improve the results I'm getting as far as a shiny consistent bead.... usually goes south of this if I stray outsid...

OK now this thing is nearly ready to melt something. I had an old O-scope that was on this cart...scope was upgraded a long time ago. Just need to figure out what I can put filler into and attach it to this setup. Has a nice drawer to keep my tig fingers, tungsten, gas lenses...weld parts in one are...

Picked it up used off CL for 200 ....and it was louder than I wanted to listen to, So that's why it was modified a bit. Seems to be fairly new.

All done and no one the wiser...until it is powered up...how nice and quiet